Default [Q] LEAP wifi authenticationfailed


as many corporates are using LEAP authentication for their wifi access, together with 4.3 version of firmware it
stops working.
On previous firmware version I configure LEAP connection in the way of:
1. domain\user
2. password
3. select certificate, I manually imported
4. save and use it

And it worked as a charm

Now, after upgrading to 4.3, I cant connect to wif, always got the authentication failed error
What I observed, when I configured the access and stored the configuration (save), it tries to connect but at the
end it fails. I reopen the configuration for modification purpose and I found that certificate is not set, the field is empty.
Even I choose the certificate once again, it always stays empty.

Now my phone is useless.

How to fix it guys?

best regards